A career at sea is one of the few where a motivated person can climb from an entry-level trainee to command of a multi-million-dollar vessel in roughly a decade. The path is well defined, governed by the international STCW convention, and every step is measured in sea time — the months you actually spend working on board.
This guide maps the two main departments, deck and engine, and what it takes to move up each one.
The deck department
The deck department runs navigation, cargo and the safety of the ship. The ladder looks like this:
- Deck Cadet — a trainee officer completing a structured training record book while studying for the first certificate.
- Third / Second Officer — a junior watchkeeping officer responsible for navigation watches, safety equipment and, for the Second Officer, passage planning.
- Chief Officer (Chief Mate) — second in command; runs cargo operations, stability and the deck crew.
- Master (Captain) — total command of the vessel, crew and safe navigation, and legally responsible for the ship.
The engine department
The engine department keeps the ship moving and every system running:
- Engine Cadet — a trainee engineer building sea time and completing a training record.
- Fourth / Third Engineer — junior engineers responsible for specific machinery and watchkeeping.
- Second Engineer — runs the day-to-day maintenance and the engine-room team.
- Chief Engineer — heads the whole engineering department and answers for the propulsion and power plant.
Alongside these sit ratings (Able Seaman, Bosun, Motorman, Fitter), electro-technical officers (ETO) and catering crew — every one of them essential to a working ship.
How you actually move up
- Get sea time. Promotion is tied to documented months in rank. Keep an accurate service record book.
- Earn the next Certificate of Competency (CoC). Each rank requires exams and approved sea service under the STCW convention.
- Add specialised endorsements. Tanker, DP (dynamic positioning), gas or offshore endorsements open higher-paying fleets.
- Build a track record with reliable crewing agencies who will promote you when a slot opens.
Where to start
If you are early in your career, the fastest way to accumulate sea time is to stay employed and keep sailing. Browse current openings for cadets and junior officers, and when you are ready to step up, filter by your target rank — for example Master or Chief Engineer — to see what employers expect at that level.